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Test your basic knowledge |
Dairy Cattle And Reproduction
Start Test
Study First
Subjects
:
industries
,
dairy
Instructions:
Answer 50 questions in 15 minutes.
If you are not ready to take this test, you can
study here
.
Match each statement with the correct term.
Don't refresh. All questions and answers are randomly picked and ordered every time you load a test.
This is a study tool. The 3 wrong answers for each question are randomly chosen from answers to other questions. So, you might find at times the answers obvious, but you will see it re-enforces your understanding as you take the test each time.
1. 26 hours after estrus begins
cryptorchid
urethra
organs used in spermatogenesis
ewe ovulation
2. Larger the cow - more milk is produced; smaller the cow - less milk is produced
6-8 weeks
Lutinizing Hormone in males
effects of estrogen
Size of cow in relation to the amount of milk produced
3. Larger the cow - more milk is produced; smaller the cow - less milk is produced
Size of cow in relation to the amount of milk produced
cow gestation
Hormones from both the fetus and the mom.
ewe ovulation
4. Castration tool which clamps down on the vans deferens. causes the sperm to not reach the penis to be ejaculated
retractor muscles
burdizzo
pelvis
sow estrus cycle
5. Head - neck - mid-piece - tail. genetic material - has an enzyme covering that allows it to penetrate the egg
6-8 weeks
cowper's gland
sperm cell
sow gestation
6. Earlier you castrate a male - the easier it is on the animal. the longer you wait - death rates increase
retractor muscles
behavioral signs of estrus
age and castration
cowper's gland
7. Examine accessory glands - also to know how big the pelvic opening is->heritable->relates to how much dystocia that bull's daughter has
ewe ovulation
Avg. bull specs
polyestrous
rectal palpation (BSE)
8. 45-60 days after breeding; re-breed as required
dairy cattle pregnancy check
pelvis
sow estrus
visual evaluation (BSE)
9. Days which have increasing daylight hours
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10. S-shaped inside body - relaxes to be exposed for breeding. Disadvantges: muscles weaken with age - cannot always hold it in - exposed to harsh outside conditions or stepped on.
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11. What helps regulate spermatogenesis?
testosterone
mare estrus cycle
functions of progestrone
seminiferous tubules
12. 30-38 hours after estrus cycle begins
things to check for in a breeding soundness exam (BSE)
retractor muscles
sow ovulation
ewe gestation
13. Parturition is controlled by...
age and castration
Hormones from both the fetus and the mom.
mare's estrous cycle
visual evaluation (BSE)
14. When she is pregnant in her last trimester because she needs the energy to carry around and deliver the calf. and when the calf is born because the cow needs the fat to be deposit it into her milk for the calf's energy stores.
behavioral signs of estrus
why does the cow need fat deposits during pregnancy?
penis and prepuce observation (BSE)
hypothalamus and pituitary gland
15. The more stressed out the male is - the less sperm he is going to produce
humans: stress level vs sperm
sperm cell
retractor muscles
Jersey Cow
16. Contains and regulates the temp of the testes for sperm production
scrotal circumference (BSE)
Avg. bull specs
scrotum
femininity of a heifer
17. 1. brain function - 2. blood flow - 3. willing female
cryptorchid
retractor muscles
what has to happen for males for copulation to occur
mare estrus
18. Important 'landmark' during palpation
cervix
polyestrous
epididymis: definition - 3 parts - 4 functions
prostaglandin
19. Sperm is produced here
seminiferous tubules
things to check for in a breeding soundness exam (BSE)
Blood
6-8 weeks
20. Microscopic - make sure not sterile - very few bulls are actually tested
butterfat
Blood
semen evaluation (BSE)
dairy cattle pregnancy check
21. (LH) stimulates the Leydig cells to produce testosterone
dartos muscle
leydid or interstitial cells
monorchid
Lutinizing Hormone in males
22. BST given to dairy cattle makes the mammary gland more persistent - helps produce more milk. good as Long-term because it does not cause cow to bulk up - provides more milk/cow Which means less cows needed - less cows need to be given feed - lower co
you want as much sperm as possible to come in contact with the egg before ovulation. the main idea is to have the sperm already in the oviduct when the egg passes through
effects of BST
mare gestation
epididymis: definition - 3 parts - 4 functions
23. (LH) stimulates the Leydig cells to produce testosterone
Mares
hypothalamus and pituitary gland
oviducts
Lutinizing Hormone in males
24. (male) pushes the testes outward toward the legs for a cool-down off of the body
organs used in spermatogenesis
prostate gland
testosterone
cremaster muscle
25. Not being bred back into herd. horses are seasonal breeders vs. cows as anytime breeders
Mares
purpose of Breeding Soundness Exam (BSE) for males
epididymis: definition - 3 parts - 4 functions
semen evaluation (BSE)
26. What helps regulate spermatogenesis?
testosterone
why does the cow need fat deposits during pregnancy?
urethra
pelvis
27. 1. bring in new genes - 2. replace males with leg problems (difficulty breeding) Note: culling has a much greater emphasis in the dairy industry vs the beef industry.
effects of estrogen
Culls bulls earlier (2 reasons)
penis proper
dartos muscle
28. 1. seminiferous tubules - 2. sertoli cells - 3. leydid or interstitial cells
scrotal circumference (BSE)
ewe's estrous cycle
organs used in spermatogenesis
dry matter and water
29. Milk ~305 days - dry 60 days prior to calving
Culls bulls earlier (2 reasons)
ewe estrus cycle
Holstein Cow
Dairy Cattle milking schedule
30. Constitute 50-90% of the volume of the ejaculate. (3 glands total: seminal vesicles - prostate gland - cowper's gland)
cervix
vagina
accessory sex glands
humans: stress level vs sperm
31. 336 days
mare gestation
estrous
dartos muscle
scrotum
32. Earlier you castrate a male - the easier it is on the animal. the longer you wait - death rates increase
age and castration
cow estrus cycle
Hard
#1 cost in production
33. (FSH) helps to regulate puberty - needed every day - stimulates the sertoli cells to produce nutrients for the sperm
reasons for castration
cremaster muscle
Follical Stimulating in males
spermatogenesis
34. 1-3 days
Follical Stimulating in females
estrus
Sperm survival specs
sow estrus
35. Help to signal hormone levels which we need both in the brain right next to each other.
hypothalamus and pituitary gland
Sperm growth rate
purpose of Breeding Soundness Exam (BSE) for males
dairy cattle pregnancy check
36. When are steers and heifers weaned from bottle feeding?
6-8 weeks
stag
kidney stones also called ________ ___________ can develop in the sigmoid flexure
burdizzo
37. 24 hours before end of estrus cycle
mare ovulation
cow ovulation
butterfat
cow estrus
38. Can survive ~7 days in cow. vast majority <48 hours
normal presentation of the fetus
Dairy calves are removed from cow at birth to...
Sperm survival specs
effects of BST
39. 19-23 (21) days
Dairy Cattle Lactation (standard)
Avg. bull specs
cow estrus cycle
ewe ovulation
40. Animals which have only one estrous cycle (ex: dog - fox)
monestrous
testis (gonads)
penis proper
Parturition
41. 1. bring in new genes - 2. replace males with leg problems (difficulty breeding) Note: culling has a much greater emphasis in the dairy industry vs the beef industry.
Culls bulls earlier (2 reasons)
penis and prepuce observation (BSE)
vulva
dry matter and water
42. Male on one pin and female on other side
accessory sex glands
sow estrus cycle
Dairy Cattle Gestation
libido test (BSE)
43. ~305 days (altough often longer due to breeding difficulties)
cow ovulation
feeding a high producing dairy cow
rectal palpation (BSE)
Dairy Cattle Lactation (standard)
44. Help to signal hormone levels which we need both in the brain right next to each other.
scrotal circumference (BSE)
hypothalamus and pituitary gland
ewe's estrous cycle
urethra
45. Scar tissue plugs up chambers of udder
prostate gland
effects of BST
Hard
mastitis
46. 4-6 days
sow gestation
cervix
burdizzo
mare estrus
47. 1-2 days
spermatogenesis
ewe estrus
mare estrus cycle
ewe gestation
48. Can produce 200 calves naturally (~100 bulls) - top 1-2% will grade like him. everything left to chance if no AI performed
cow estrus cycle
Avg. bull specs
mare gestation
effects of BST
49. Located directly in front of the cervix. fertilized egg implants here. connected to two uterine horns. implantation occurs on the same side as ovulation occurred.
you want as much sperm as possible to come in contact with the egg before ovulation. the main idea is to have the sperm already in the oviduct when the egg passes through
uterus
eminal vesicles
ewe gestation
50. Not being bred back into herd. horses are seasonal breeders vs. cows as anytime breeders
elastrator
4 major reasons for culling dairy cows
Mares
dairy cattle pregnancy check